学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.85
所属科目:小学英语
听录音,选出你所听到的字母或单词。
(      ) 1. A. G             B. J                 C. K
(      ) 2. A. B             B. D               C. E
(      ) 3. A. C            B. N               C. A
(      ) 4. A. E             B. D               C. F
(      ) 5. A. father        B. family        C. friend
(      ) 6. A. hi             B. he             C. she
(      ) 7. A. brother       B. sister          C. mother
(      ) 8. A. good          B. goodbye     C. grandpa
(      ) 9. A. you            B. my             C. I
(      ) 10. A. class        B. Miss            C. sister
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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